Can I further this question? I am knitting a baby sweater too. In a ribbed section, I bind off one where the button hole will be and then am supposed to cast one on above that in the next row. Everywhere else in the pattern, it says to YO when it wants a YO, so now I'm wondering if I can YO for this cast-on or if there is something else. What is the backwards loop method of casting on?
Thanks!!

Dear Kurango, I don't know who you are but I am immensely grateful for your web link for "casting on in the middle of a row". After watching it a few times I could master it. These videos are my saving grace! Karen

Thanks Kurango for the video showing me how to cast on in the middle of a project. I lost my best knitting advisor, my mother, about 6 months ago; and I didn't know how I was going to get my knitting problems resolved. I turned to to the internet and I am so happy to have found this sight. The video was just what I needed.